Long-term Debt

Total long-term debt consists of the following (in millions):



	March 31,		December 31,
	2013		2012
Amounts borrowed (Credit Facility)	$	24.0	$	73.3
Obligations under capital leases	11.3		11.4
Total long-term debt	$	35.3	$	84.7

We have a revolving credit facility (“Credit Facility”) extended through May 2016 with a capacity of $200 million which provides for up to an additional $100 million of lenders' revolving commitments, subject to certain provisions. Borrowings under the Credit Facility are subject to interest based on LIBOR or CDOR borrowings plus a margin in the range of 175 to 225 basis points, depending on the amount of available credit.

All obligations under the Credit Facility are secured by first priority liens upon substantially all of our present and future assets. The terms of the Credit Facility permit prepayment without penalty at any time (subject to customary breakage costs with respect to LIBOR or CDOR based loans prepaid prior to the end of an interest period).

The Credit Facility contains restrictive covenants, including among others, limitations on dividends and other restricted payments, other indebtedness, liens, investments and acquisitions and certain asset sales. As of March 31, 2013, we were in compliance with all of the covenants under the Credit Facility.

Amounts borrowed, outstanding letters of credit and amounts available to borrow, net of certain reserves required under the Credit Facility, were as follows (in millions):



	March 31,		December 31,
	2013		2012
Amounts borrowed	$	24.0	$	73.3
Outstanding letters of credit	$	21.9	$	19.8
Amounts available to borrow ⁽¹⁾	$	145.6	$	97.7

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(1)	Excluding $100 million expansion feature.

Average borrowings during the three months ended March 31, 2013 and 2012 were $34.3 million and $24.8 million, respectively, with amounts borrowed, at any one time outstanding, ranging from $15.0 million to $73.3 million and from zero to $72.9 million, respectively.

Our weighted-average interest rate was calculated based on our daily cost of borrowing, which was computed on a blend of prime and LIBOR rates. The weighted-average interest rate on our revolving credit facility for the three months ended March 31, 2013 and 2012 was 2.0% and 2.1%, respectively. We paid total unused facility fees and letter of credit participation fees, which are included in interest expense, of $0.2 million during both periods. Amortization of debt issuance costs is included in interest expense. Unamortized debt issuance costs were $1.4 million as of March 31, 2013 and $1.5 million as of December 31, 2012.